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Comment by khalilravanna | Hacker News Reader

This comment would be more helpful with some examples. I’m personally very curious what the leading solutions are. I’ve worked with one involving GraphQL but that’s about it.

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I can't speak to leading solutions, but in the .net world, there's Blazor[0] which is C# for the whole stack. There's also Fable[1] which is F# the whole way down.

[0]: https://dotnet.microsoft.com/en-us/apps/aspnet/web-apps/blaz...

[1]: https://fable.io/

you forgot: Reinforced.Typings.

btw. most of the time I wish my company used such things or that code would be more isomorphic, BUT!!! most of the time isomorphic models lead to way more problem, especially when it comes to validation.

Maybe this isn't what the GP comment meant, but I think codegen can serve this function pretty well nowadays. I'm currently working on two separate projects, the first is a Django project with DRF and I codegen with drf-spectacular [1] and openapi-typescript-codegen [2]. The other project also uses Django, with the API through Hasura and codegen with graphql-codegen [3]. In both of these cases I've been able to largely avoid duplicating my models clientside, or at least it isn't manual.

1: https://github.com/ferdikoomen/openapi-typescript-codegen

2: https://drf-spectacular.readthedocs.io/en/latest/

3: https://github.com/dotansimha/graphql-code-generator

Can't speak for the rest of the world, but my team has been using an NX monorepo with a standard types library that can be imported into any application in the monorepo. It is trivial to use the same interface, enum, class, or other type-enforcing mechanism across multiple frontend and backend services. The development experience has been quite nice, and refactoring/changing the data structures is a breeze. If you are in the Typescript world and haven't looked at NX...check it out.

By the way, echoing some discussion above, we migrated from Express to NestJS, and it was an excellent decision.

Yep, I personally have written our backend in Python (with type-hints) and the frontend is a React SPA that I recently migrated from JS to TS.

After the migration to TS, I really want something I can use to model the data once and use in both the backend and frontend, because its very repetitive. Haven't found anything yet.

https://github.com/OpenAPITools/openapi-generator

tRPC is a good choice for TypeScript: https://trpc.io/

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